US Bridges

Fish Lake Road over E. Fork Salmon River

Fair

Siskiyou County, California · Callahan · Structure no. 050555000001003

Built
1966
59 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
51 ft
1 main span
Daily traffic
15
Owner
Federal
U.S. Forest Service

About this bridge

Fish Lake Road over E. Fork Salmon River is a wood or timber stringer/multi-beam or girder carrying Fish Lake Road over E. Fork Salmon River in Siskiyou County, California. It was built in 1966, so it is 59 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 15 vehicles a day, projected to reach 22 by 2045. The structure is 51 ft (15.4 m) long and 15 ft wide.

CarriesFish Lake Road
CrossesE. Fork Salmon River
LocationCallahan
RouteFederal Lands Road 39N05
Coordinates41.22645, -122.962
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating100.1 US tons
Inventory rating100.1 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length51 ft (15.4 m)
Longest span48 ft (14.6 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (—)
Projected traffic22 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Fish Lake Road over E. Fork Salmon River built?

It was built in 1966, making it 59 years old in 2025.

What condition is Fish Lake Road over E. Fork Salmon River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2023.

How much traffic does Fish Lake Road over E. Fork Salmon River carry?

About 15 vehicles per day (latest count).

How long is Fish Lake Road over E. Fork Salmon River?

The structure is 51 ft (15.4 m) long with a longest span of 48 ft (14.6 m) and a deck 15 ft wide.

Who owns Fish Lake Road over E. Fork Salmon River?

It is owned by the U.S. Forest Service.